(19)
(11) EP 3 901 383 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
23.02.2022 Bulletin 2022/08

(43) Date of publication A2:
27.10.2021 Bulletin 2021/43

(21) Application number: 21165788.7

(22) Date of filing: 30.03.2021
(51) International Patent Classification (IPC): 
E02F 9/20(2006.01)
E02F 9/24(2006.01)
B66F 9/065(2006.01)
 E02F 9/08(2006.01)
E02F 9/22(2006.01)
B66F 17/00(2006.01)
(52) Cooperative Patent Classification (CPC):
B66F 17/003; B66F 9/0655; E02F 9/2033; E02F 9/085; E02F 9/24; E02F 9/2257; E02F 9/2029
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 31.03.2020 GB 202004691

(71) Applicant: J.C. Bamford Excavators Limited
Uttoxeter Staffordshire ST14 5JP (GB)

(72) Inventor:
  • BAILEY, Jonathan Kenred
    Uttoxeter, Staffordshire ST14 5JP (GB)

(74) Representative: Foot, Paul Matthew James 
Withers & Rogers LLP 2 London Bridge
London SE1 9RA
London SE1 9RA (GB)

   


(54) A CONTROLLER


(57) A controller for use with a working machine comprising a machine body and a load handling apparatus coupled to the machine body and moveable by a lift actuator with respect to the machine body and moveable by a sway actuator about a sway axis with respect to a lateral reference orientation, wherein the controller is configured to receive:
a signal representative of the position of the load handling apparatus with respect to the machine body or a longitudinal reference orientation; and
a signal representative of a stability of the working machine,
and wherein the controller is further configured to determine a permissible movement range of the load handling apparatus about the sway axis and issue a signal for use by an element of the working machine including the sway actuator, which in response to the signal issued by the controller is configured to restrict or prevent movement of the load handling apparatus outside of the permissible movement range relative to the lateral reference orientation, the permissible movement range being dependent on the signal representative of the position of the load handling apparatus with respect to the machine body or longitudinal reference orientation and the signal representative of the stability of the machine.







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